SSS 2008-11-25
时间：2018-12-24 作者：英语课 分类：Scientific American(十一)月
This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute.
Electronics come in all shapes and sizes—but there’s been a limit on their flexibility 1. Now, researchers say they’ve created electronics that can be shaped in virtually any way, including bent 2, stretched and even tightly coiled. They published their results in the Proceedings 3 of the National Academy of Sciences.
Silicon 4 is the principal ingredient in electronics, and it’s inflexible 5 and brittle 6. To overcome this constraint 7, the researchers first developed one-dimensional, single-crystal silicon electronics, which they reported in 2005. The crystals could be stretched without losing their properties.
Then last summer they demonstrated that they could build tiny circuits that were connected by tiny metal bridges. The final product could be bent and placed over a curved surface. Most recently, the researchers modified the bridges into an S shape. The additional step takes the flexibility further—the electronics can now be twisted into curves as well. One use could be a sensor 8 on a human body. But the scientists see applications beyond the biological—they’re trying to develop flexible solar cells. Flat cells need to move to follow the sun. But a flexible cell could always receive direct rays without constant repositioning.
Thanks for the minute for Scientific American's 60-Second Science. I'm Cynthia Graber.
- Her great strength lies in her flexibility.她的优势在于她灵活变通。
- The flexibility of a man's muscles will lessen as he becomes old.人老了肌肉的柔韧性将降低。
- He was fully bent upon the project.他一心扑在这项计划上。
- We bent over backward to help them.我们尽了最大努力帮助他们。
- He was released on bail pending committal proceedings. 他交保获释正在候审。
- to initiate legal proceedings against sb 对某人提起诉讼
- This company pioneered the use of silicon chip.这家公司开创了使用硅片的方法。
- A chip is a piece of silicon about the size of a postage stamp.芯片就是一枚邮票大小的硅片。
- Charles was a man of settled habits and inflexible routine.查尔斯是一个恪守习惯、生活规律不容打乱的人。
- The new plastic is completely inflexible.这种新塑料是完全不可弯曲的。
- The pond was covered in a brittle layer of ice.池塘覆盖了一层易碎的冰。
- She gave a brittle laugh.她冷淡地笑了笑。
- The boy felt constraint in her presence.那男孩在她面前感到局促不安。
- The lack of capital is major constraint on activities in the informal sector.资本短缺也是影响非正规部门生产经营的一个重要制约因素。